.toast{
    width: 200px;
    height: 50px;
    background-color:rgba(0,0,0,0.4);
    margin: 200px auto;
    z-index: 99;
    color: #fff;
    font-size: 24px;
    text-align: center;
    display: none;
    border-radius: 20px ;
    line-height: 50px;
    position: relative;
}